40 x 31 mm. Made in silver- on the reverse a faintly legible namesake "WC"(?). The reverse is plain. Mounted with a horizontal safety pin. Lit. Tomasz Zawistowski, Polish eagles for caps 1900-1917, p. 277, Ireneusz Banaszkiewicz, Catalogue of eagles from collections Volume I, p. 229 - both authors classify the eagle as patriotic, while Bohdan Mincer, Polish military eagles for caps from 1914-1936. in: Arms and Colors, 1936, no. 9 p. 209, photo 8 describes it as being used in the horse troops of the "Sokol" Very good condition.